Main advantages of soybean "ridge three" cultivation technique?
The main advantages of soybean "ridge three" cultivation techniques are as follows:
The main results are as follows: 1. the deep loosening of the soil breaks the plough bottom, deepens the plough layer, improves the soil structure, is beneficial to the development of soybean root system and the formation of root nodules, and forms the soil structure with the coexistence of deficiency and reality, which improves the soil permeability.
Second, layer-by-layer fertilization in ridges can improve the utilization rate of chemical fertilizer, delay the time of fertilizer supply, and prevent de-fertilization in the later growth stage. At present, the small precision seeder used in production can apply chemical fertilizer deeply, and the seed fertilizer and base fertilizer can be applied at the same time.
Third, double-strip precision sowing in ridge soil not only reduces the amount of seed used, but also overcomes the phenomenon of lack of seedlings and broken ridges, which makes the population distribution reasonable.
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Control measures of three diseases of soybean
Soybean root rot: the disease can occur and cause damage throughout the growth period of soybean, with a yield reduction of 25% to 75% or more. The protein content of the damaged seeds decreased obviously, and the main symptom was that the dark brown disease spot appeared at the base of the stem and spread upward to the lower lateral branches, which made the pith of the diseased stem brown, the base of petiole constricted and the leaves drooping, but did not fall off. The main application of chemical control is 58% Ruidu Manganese Zinc or 72% Kelu wettable powder, the dosage is 0.3% 0.4% seed dressing. Soybean sclerotinia disease
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Integrated Control of Soybean "Fire Dragon Seedling"
The soybean area of Wudalianchi City in Heilongjiang Province is 950,000 mu, and the continuous cropping area is 930,000 mu, accounting for 97.8% of the soybean planting area. Through investigation, the occurrence area of soybean "fire dragon seedling" is about 96.5%, most of the yield reduction is between 20~50%, and some plots reach the end of production. It can be said that soybean continuous cropping area can not be controlled due to the influence of market economy, but the occurrence of soybean "fire dragon seedling" can be reduced through comprehensive control, so that soybean can achieve high and stable yield. Integrated control techniques of soybean "fire dragon seedling" were introduced.
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